How to Build a Saltwater Halide Light

Halide lighting is a popular choice for home aquariums. Unlike the standard fluorescent bulbs, halide bulbs provide intense illumination, with one bulb giving off several hundred watts of light energy. Metal halide lights are the only type of lighting for aquariums that can create the shimmering ripples in the water known as glitter lines. However, halide lights can be expensive. For a fraction of the cost, you can purchase the materials and construct your own halide light fixture.

Things You'll Need

  • Reflector kit
  • Damp cloth
  • Light socket (if not included in reflector kit)
  • Screws
  • Screwdriver
  • Metal halide light bulbs
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Instructions

    • 1

      Determine the proper halide bulb wattage that you need for your aquarium. Remember that the higher the wattage, the brighter the light will be in the tank.

    • 2

      Lay the reflector piece flat on the work surface with the reflective side facing up. Wipe the material with a damp cloth to remove dust particles and any debris. Refrain from touching the wiped surface to prevent fingerprint stains. Avoid handling the material more than necessary as the oils from your skin can dull the shine.

    • 3

      Place the light sock inside the reflector piece. Align the socket so that it lies perpendicular to the face of the reflector. Secure the socket in place with screws.

    • 4

      Attach the reflector to the top of the tank lid. Make sure the reflector hangs approximately 12 inches away from the surface of the water to allow proper air circulation and prevent the transfer of too much heat from the reflector to the water, which would cause the water to overheat. Refer to any hanging instructions that came with the reflector kit.

    • 5

      Place the metal halide bulb into the light socket and tighten. Hold the bulb and gently apply even pressure until you feel the socket lock into place. Avoid touching the bulb with your fingers to prevent damage to the bulb.

    • 6

      Fasten the glass reflector shield to the reflector piece if desired, to provide additional protection against water splashes that can result in a broken halide bulb.

    • 7

      Plug the halide light fixture in and watch for any flickering in the bulb. Replace bulbs every six to 12 months as necessary.